CN103038050A - Device for manufacturing profile corrugated tube, method for manufacturing profile corrugated tube and profile corrugated tube - Google Patents

Device for manufacturing profile corrugated tube, method for manufacturing profile corrugated tube and profile corrugated tube Download PDF

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Publication number
CN103038050A
CN103038050A CN2011800366116A CN201180036611A CN103038050A CN 103038050 A CN103038050 A CN 103038050A CN 2011800366116 A CN2011800366116 A CN 2011800366116A CN 201180036611 A CN201180036611 A CN 201180036611A CN 103038050 A CN103038050 A CN 103038050A
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CN
China
Prior art keywords
metal die
attitude
special shaped
molded
sylphon bellows
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Granted
Application number
CN2011800366116A
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Chinese (zh)
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CN103038050B (en
Inventor
板垣启治
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Sumitomo Wiring Systems Ltd
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Sumitomo Wiring Systems Ltd
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Publication of CN103038050A publication Critical patent/CN103038050A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/303—Extrusion nozzles or dies using dies or die parts movable in a closed circuit, e.g. mounted on movable endless support
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/10—Forming by pressure difference, e.g. vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D23/00—Producing tubular articles
    • B29D23/001—Pipes; Pipe joints
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/004—Shaping under special conditions
    • B29C2791/006—Using vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/0015—Making articles of indefinite length, e.g. corrugated tubes
    • B29C49/0021—Making articles of indefinite length, e.g. corrugated tubes using moulds or mould parts movable in a closed path, e.g. mounted on movable endless supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2016/00—Articles with corrugations or pleats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/18—Pleated or corrugated hoses

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Details Of Indoor Wiring (AREA)

Abstract

The present invention is a device for manufacturing a flat, profile corrugated tube. The device is provided with: a supply unit for extruding a molten resin material in a sheet shape and supplying the extruded resin material; pairs of dies for molding the profile corrugated tube, which have die surfaces having portions corresponding to one side sections along the cross-sectional longitudinal direction of the profile corrugated tube; a drive mechanism unit which is capable of changing the attitudes of the pairs of the dies between a receiving attitude capable of receiving sheet-shaped compacts that are supplied from the supply unit when the die surfaces are opened and a molding attitude in which the die surfaces are closed, and which changes the attitudes of the pairs of the dies into the molding attitude after the sheet-shaped compacts that are supplied from the supply unit are received in the receiving attitude; and a contact molding unit for bringing the sheet-shaped compacts that are supplied from the supply unit into contact with the die surfaces of the pairs of the dies in the receiving attitude.

Description

For the manufacture of the device of special shaped sylphon bellows, for the manufacture of method and the special shaped sylphon bellows of special shaped sylphon bellows
Technical field
The present invention relates to one for the manufacture of the technology of special shaped sylphon bellows.
Background technology
Device for the manufacture of bellows is disclosed in the patent documentation 1.According to patent documentation 1, have such structure for the manufacture of the device of pipe: have many to molded for the molding space by the closed almost cylindricality that is formed for making pipe, and make this many to molded mobile at track for no reason, open can realize mould closure or mould.More specifically, molded wall surface is the shape of bellows, is wherein alternately repeated along axial direction along the outside recessed diameter increase section of pipe radial direction with along the reduced diameter portion that radial direction inwardly narrows down.And in pairs molded is placed in wherein their closed mould closure states in stroke range, and be placed in wherein they in other position mould open mode separated from one another.The cylindricality molten resin is supplied to by the entrance side from stroke range and wherein utilizes extruder to be formed into the molded space, and in addition, compressed air is fed into its inside, and carries out expansion and open and make molten resin be attached to molded wall surface.
The prior art document
Patent documentation
Patent documentation 1: Japanese Patent Application Publication No.2000-343592
Summary of the invention
Problem to be solved by this invention
The bellows of making as mentioned above is used as in some cases for the protection of the external shell parts that will be arranged on the wire harness in the vehicle.According to the space in the shape of the wire harness that becomes the protection target or the place of be used for settling, also use in some cases flat special shaped sylphon bellows.Suppose in addition a kind of like this situation, wherein this special shaped sylphon bellows requires to have high long size and the shape of short dimensional ratios (hereinafter will be called percentage elongation) in cross sectional view.
Yet, in the device for the manufacture of bellows, be difficult to make the special shaped sylphon bellows with high elongation rate.In other words, in supplying to metal die (molded) after, resin material is tending towards distortion at once, because it is directly to be supplied in the soft state of realization after temperature reduces under molten condition.And then, resin material have in cross sectional view than on the length direction, with the part that exists closely-spacedly.Therefore, worry that these parts may be attached to together owing to the impact of gravity and may be not adhered to the metal die surface.
Therefore, the object of the invention is to make a kind of flat special shaped sylphon bellows with high elongation rate.
Be used for solving the scheme of described problem
First aspect relates to a kind of sectional corrugated pipe manufacturing apparatus for the manufacture of flat special shaped sylphon bellows, and this sectional corrugated pipe manufacturing apparatus comprises: supply unit, and it is used for molten resin is released with sheet, and supplies with molten resin; The paired metal die that is used for molded special shaped sylphon bellows, it comprises the metal die surface, described metal die surface have respectively in the cross sectional view with special shaped sylphon bellows than a part that sidepiece is corresponding on the length direction; Driving mechanism section, it can be changed into the attitude of paired metal die and receive attitude and molded attitude, and after the sheet molding of being supplied with by supply unit is the paired metal die reception that receives attitude, driving mechanism section changes into molded attitude with the attitude of paired metal die, in receiving attitude, the metal die surface is opened, and can receive the sheet molding of being supplied with by supply unit; In molded attitude, the metal die surface is closed; With adhere to molded section, metal die surface that it is used for that the sheet molding of being supplied with by supply unit is attached to presents the paired metal die that receives attitude.
Second aspect relates to the device for the manufacture of special shaped sylphon bellows according to first aspect, wherein, the molded attitude of metal die is such attitude in pairs: each metal die surface forms predetermined space in a marginal portion, and adjacent one another are in another marginal portion.
The third aspect relates to a kind of according to first or the device for the manufacture of special shaped sylphon bellows of second aspect, wherein the reception attitude of metal die is such attitude in pairs: each described metal die surface is turned into towards the top, and adjacent one another are in described another marginal portion.
Fourth aspect relates to a kind of according to first any device for the manufacture of special shaped sylphon bellows to the third aspect, wherein, supply unit can be supplied with the sheet molding continuously, and driving mechanism section respectively on paired endless loops moving track arow move many to metal die, and little by little change over the attitude to metal die towards the downstream from the upstream, thereby make in the upstream position in the predetermined pipe die path processed of paired metal die in moving track and be the reception attitude, and make the downstream position in the pipe die processed path of paired metal die in moving track be molded attitude, wherein, the sheet molding is supplied with by predetermined pipe die path processed from supply unit.
The 5th aspect relates to a kind of device for the manufacture of special shaped sylphon bellows of any according in first to fourth aspect, and wherein said driving mechanism section comprises respectively: the directed section, and it is installed to many to each metal die in the metal die; Paired guiding rail, it is along the moving track setting, and forms and have such shape: can be with the directed section guiding on pipe die path processed the attitude of paired metal die being changed into molded attitude from the reception attitude; With feeding section, it is used for so that many mode feedings that metal die is moved towards the downstream from the upstream in pipe die path processed are many to metal die.
The 6th aspect relates to a kind of sectional corrugated pipe manufacturing method for the manufacture of flat special shaped sylphon bellows, and described sectional corrugated pipe manufacturing method may further comprise the steps: (a) molten resin is released with sheet, and supplied with molten resin; (b) the sheet molding of supplying with in the step (a) is molded as such shape: special shaped sylphon bellows rupturing and opening than the end place on the length direction in cross sectional view; And (c) make the shape molding body closure that in step (b), is molded as and has the special shaped sylphon bellows fracture and open.
The 7th aspect relates to a kind of flat special shaped sylphon bellows, and in described flat special shaped sylphon bellows, the size than on the length direction in cross sectional view is set as three times of size on the shorter direction or larger.
Effect of the present invention
According to the device for the manufacture of special shaped sylphon bellows according to first aspect, adopted a kind of like this structure, wherein molten resin is supplied to section with the sheet release and supplies with, and then reception changes into molded attitude by the sheet molding of supply unit supply and the attitude of paired metal die in receiving attitude.Therefore, can prevent from trending towards the sheet molding distortion of after supply, being out of shape at once and adhering to together.Therefore, it is possible making the flat special shaped sylphon bellows with high elongation rate.
According to the device for the manufacture of special shaped sylphon bellows according to second aspect, the molded attitude of metal die is set as such attitude in pairs: each metal die surface forms predetermined space in a marginal portion.Therefore, in the situation that not provide separately slit to form the flat special shaped sylphon bellows that step manufacturing has be used to the slit that holds wire harness be possible.
According to the device for the manufacture of special shaped sylphon bellows according to the third aspect, the reception attitude of metal die is set as such attitude in pairs: each metal die surface is turned into towards the top.Therefore, can prevent from separating from the metal die surface supplied to the sheet molding that is on the paired metal die that receives attitude by supply unit.Therefore, it is possible making the flat special shaped sylphon bellows with high elongation rate more reliably.
According to the device for the manufacture of special shaped sylphon bellows according to fourth aspect, the sheet molding section of being supplied to supply with continuously and many to metal die mobile in the upstream position in pipe die path processed, to be the reception attitude and in its downstream position, to be molded attitude on the moving track.Therefore, metal die is received and in turn the attitude of every pair of metal die is changed into molded attitude continuously to make flat special shaped sylphon bellows be possible by many by the sheet molding supplied with by supply unit.In other words, can make continuously the flat special shaped sylphon bellows with high elongation rate.
According to the device for the manufacture of special shaped sylphon bellows according to the 5th aspect, the directed section is guided by guiding rail; Therefore, be moved into metal die changed into attitude simultaneously and receive attitude and molded attitude is possible.Therefore, it is possible utilize simple structure to be moved into metal die being changed attitude simultaneously.
According to the method for the manufacture of special shaped sylphon bellows according to the 6th aspect, molten resin is released and is supplied with sheet, and the sheet molding of supplying with thus is molded into special shaped sylphon bellows fracture and open shape, thereby and the molding that is bellows fracture and open this shape then be closed and make special shaped sylphon bellows.Therefore, can prevent from being tending towards the sheet molding distortion of after supplying with, being out of shape at once and adhering to each other.Therefore, it is possible making the flat special shaped sylphon bellows with high elongation rate.
According to the special shaped sylphon bellows according to the 7th aspect, the size than on the length direction in cross sectional view is set as three times of size on shorter direction or larger.Therefore, special shaped sylphon bellows is applicable to be flat pattern and has the guard block of the wire harness of the gauge less than width dimensions, and can be with compacter structure installation in the space with little width.
Brief Description Of Drawings
Fig. 1 is the perspective view that illustrates according to the special shaped sylphon bellows of an embodiment;
Fig. 2 is the schematic plan view that illustrates for the manufacture of according to the device of the special shaped sylphon bellows of this embodiment;
Fig. 3 illustrates the plane that is the paired metal die that receives attitude;
Fig. 4 is the front view that is illustrated in the paired metal die among the position A of Fig. 2;
Fig. 5 is the front view that is illustrated in the paired metal die among the position B of Fig. 2;
Fig. 6 is the front view that is illustrated in the paired metal die among the position C of Fig. 2;
Fig. 7 is the front view that another molded attitude is shown;
Fig. 8 illustrates the view that adheres to molded section.
The specific embodiment
Will be for according to the special shaped sylphon bellows of embodiment, provide explanation for the manufacture of the device of special shaped sylphon bellows with for the manufacture of the method for special shaped sylphon bellows.
＜special shaped sylphon bellows 〉
At first, will describe special shaped sylphon bellows 10(and see Fig. 1).Special shaped sylphon bellows 10 is the cylindrical parts that will be used as for the protection of external shell parts that will be arranged on the wire harness (WH) in vehicle etc. etc.To be that example for the protection of the external shell parts of wire harness (WH) provides explanation by special shaped sylphon bellows 10 wherein.
The flat special shaped sylphon bellows that obtains by the special shaped sylphon bellows that almost rolls in cross sectional view in the form of a ring according to the special shaped sylphon bellows 10 of the present embodiment.Shape of the crooked minor face of the shape that the cross sectional shape of flat special shaped sylphon bellows 10 comprises elliptical shape, obtain by the bight sphering to rectangle, the evagination with rectangle etc.In other words, special shaped sylphon bellows 10 is such shape: in cross sectional view, be long in one direction and be short in the vertical direction of this direction.In the cross sectional view of special shaped sylphon bellows 10, having large-sized direction will be known as than length direction, and with opposite than length direction, have undersized direction and will be known as shorter direction.And, in interior perimembranous (the interior perimembranous of the concave portions 14 that will describe after a while), will be known as percentage elongation in the dimensional ratios than the size on the length direction and the size on shorter direction.
This special shaped sylphon bellows 10 is suitable for protecting the wire harness WH that is flat pattern.In other words, wire harness WH also has and is wherein many wires by the part of the flat pattern of harness abreast.For example, the wire harness WH that is flat pattern is used in the place with little accommodation space, for example, and between the motor and battery that are used in some cases in motor vehicle driven by mixed power, the electric car etc.
More specifically, special shaped sylphon bellows 10 is formed so flat cylindrical shape: the convex part 12 and the concave portions 14 that wherein form along circumferential direction are alternately arranged on bearing of trend continuously.Special shaped sylphon bellows 10 has and is set as three times or larger percentage elongation.Fig. 1 illustrates the special shaped sylphon bellows 10 with the percentage elongation that is set as approximate octuple.Because this flat pattern, special shaped sylphon bellows 10 are difficult to be out of shape than length direction and be tending towards being out of shape in shorter direction.
Herein, special shaped sylphon bellows 10 is such shape: than the two ends on length direction places, convex part 12 and concave portions 14 flush (being positioned on the straight line of bearing of trend of special shaped sylphon bellows 10) (seeing Fig. 1,6 and 7) mutually.More specifically, convex part 12 and concave portions 14 are formed: so that in the part than the distolateral place on the length direction, little by little reducing towards the end about poor (depth displacement between convex part 12 and the concave portions 14) between the distance of the central axis of bellows 10.And special shaped sylphon bellows 10 is such shape: wherein cross sectional shape is the sweep that the minor face of wherein rectangle is set as evagination, that is to say, has on than length direction almost straight part at place, the two ends on the shorter direction.
And special shaped sylphon bellows 10 has the slit 16 that forms at the bearing of trend that is in special shaped sylphon bellows 10 than an end on the length direction.Slit 16 is used for wire harness WH is seated in special shaped sylphon bellows 10.Preferably, wire harness WH is seated in the special shaped sylphon bellows 10 by slit 16, thereby and by carrying out that adhesive tape winding etc. is closed and with slit 16 as the external shell parts for the protection of wire harness WH.Special shaped sylphon bellows 10 does not need to have slit 16(and sees Fig. 7).In other words, it can be endless loops in cross sectional view.
Form special shaped sylphon bellows 10, described resin material 8 all in this way Nylon(nylon, registration mark by resin material 8 is carried out metal-molding) or olefin resin (polyethylene, polypropylene etc.).
According to special shaped sylphon bellows 10, short size is set as less than long size.Therefore; shape based on wire harness WH; even protecting therein in addition target is to be flat pattern and to have in the situation of wire harness WH of the gauge less than width dimensions; be and be more suitable between the special shaped sylphon bellows 10 of the shape with high elongation rate of this shape also is set as the outer peripheral portion of within it perimembranous and wire harness WH, having little gap, allow to thus suppress sideshake.And, based on accommodation space, to protect therein in the situation of the wire harness WH with large width dimensions in addition, special shaped sylphon bellows 10 can have little short size and can be placed in the space with less width.
＜for the manufacture of the device of special shaped sylphon bellows 〉
Below, with the sectional corrugated pipe manufacturing apparatus 20 of explanation for the manufacture of flat special shaped sylphon bellows 10.Sectional corrugated pipe manufacturing apparatus 20 comprises supply unit 30, many to metal die 40, driving mechanism section 50 with adhere to molded 70(about adhering to molded 70, sees Fig. 2 and Fig. 8).
Supply unit 30 is constituted as to be released molten resin material 8 with sheet, and supplies with molten resin material (seeing Fig. 2 and 3).Supply unit 30 is to extrude machine, and molten resin material 8 is released and with the molded molten resin material 8 of sheet via T mould (flat-die) 32 on the top.Supply unit 30 is used for supplying with sheet molding (resin material 8) with soft state.Suppose that soft state represents the state harder than molten condition (being difficult to carry out fluidization) and can carry out molded soft state before solidifying.The flaky resin material 8 that after being supplied with by supply unit 30, at once obtains in soft state beginning to reduce temperature from molten condition after very easy distortion the under at once the soft state.Fig. 4 shows the resin material 8 of being supplied with sheet above paired metal die 40 with double dot dash line.
In supply unit 30, T mould 32 is set as such attitude: with resin material 8 with respect to the horizontal plane almost parallel sheet release.In the following description, in some cases, the position of the head portion of T mould 32 is called as the supply position of supply unit 30.
Herein, be set to by the sheet molding (resin material 8) that supply unit 30 is supplied with to have than with the large width dimensions (seeing Fig. 3 and 4) in interval between the marginal portion in (outside) that is the metal die surface 42 in the paired metal die 40 that receives attitude described later.In other words, set this size based on following consideration: when the sheet molding closely is out of shape because of gravity with respect to the metal die surface 42 of paired metal die 40 and adheres to when it will be adhered to, prevent the sheet molding in the outside (in a marginal portion) locate deficiency.Therefore, as shown in the right side of Fig. 3 and Fig. 4, can realize such state: in the time will making resin material 8 be attached to metal die surface 42, make resin material 8 be attached to the marginal portion on metal die surface 42, that is, and whole metal die surface 42.
And supply unit 30 is constituted as the supply that allows continuously sheet molding (resin material 8).In other words, molten resin material is released and supplied with thus to supply unit 30 with molten resin material 8 with sheet continuously.
In pairs metal die 40 is the metal dies for molded special shaped sylphon bellows 10, and this metal die comprises the metal die surface of the part that the sidepiece than on the length direction in the cross sectional view that has respectively with special shaped sylphon bellows 10 is corresponding.Be referenced into metal die 40, in some cases, will be used as hereinafter the direction corresponding with the shape of special shaped sylphon bellows 10 than length direction with shorter direction.
Metal die surface 42 is corresponding to by being divided into the shape that two parts obtain than the two ends on length direction places with special shaped sylphon bellows 10 in cross sectional view.Here, metal die surface 42 will along place, the end of shorter direction in cross sectional view than the almost straight part on the length direction as the part (see figure 4) corresponding with the sidepiece than on the length direction in the cross sectional view of special shaped sylphon bellows 10.And, metal die surface 42 have with cross sectional view in consecutive, corresponding with the sweep than two distolateral places of length direction in the cross sectional view of special shaped sylphon bellows 10 sweep in cross sectional view in the both sides of almost straight part.When paired metal die 40 engages with this attitude so that metal die surface 42 toward each other the time, each metal die surface 42 consists of surface corresponding with the shape of special shaped sylphon bellows 10.
Metal die surface 42 is to have the male portion that alternately arranges in a continuous manner in one direction to divide the surperficial 42a of formation and concave portions to form the concave surface (seeing Fig. 3,4 and 8) of surperficial 42b.Male portion divides that to form surperficial 42a be towards the recessed concave surface of outer circumferential side, and concave portions to form surperficial 42b be the convex surface of protruding towards interior all sides.Male portion is divided and is formed surperficial 42a and concave portions and form surperficial 42b almost flush each other (male portion divide form surperficial 42a and concave portions form surperficial 42b and be positioned on the straight line of continuous direction) in the part corresponding with the two ends than on the length direction in the cross sectional view of special shaped sylphon bellows 10.In other words, above-mentioned part is such shape, namely divides the surperficial 42a of formation and concave portions to form between the surperficial 42b without depth displacement (distance on the inward-outward direction is almost nil) in male portion.More specifically, divide in male portion and form surperficial 42a and concave portions and form depth displacement (distance on the inward-outward direction) between the surperficial 42b towards reducing gradually than the end in the two ends sidepiece on the length direction.
Another marginal portion on metal die surface 42 be arranged in paired metal die 40 than (seeing Fig. 3 and 4) on each of the other end on the length direction.In other words, when paired metal die 40 was adjacent one another are with the attitude that is engaged with each other, another marginal portion on metal die surface 42 was adjacent one another are.
Herein, many metal die 40 is produced and has identical shaped.In pairs metal die 40 has arranging that male portion is divided and forms the male portion that a direction that surperficial 42a and concave portions form surperficial 42b is arranged on one of end and divide the concave portions that forms surperficial 42a and be arranged on the other end to form surperficial 42b.In other words, when many when metal die 40 is arranged along direction, also alternately arrange that male portion is divided between to metal die 40 and form surperficial 42a and concave portions forms surperficial 42b many.
Driving mechanism section 50 is constituted as the attitude of paired metal die 40 to be changed into and can opens metal die surface 42(along upward direction) with the reception attitude that receives the sheet molding (resin material 8) of being supplied with by supply unit 30 and the molded attitude (seeing Fig. 2 and 4 to 7) that is closed of metal die surface 42 wherein.And driving mechanism section 50 is used for after being paired metal die 40 receptions that receive attitude the attitude of paired metal die 40 being changed into molded attitude at the sheet molding of being supplied with by supply unit 30.
More specifically, driving mechanism section 50 makes and many metal die 40 is being on the paired moving track of endless loops mobile in turn.In the predetermined pipe die path R processed of moving track, in pairs the attitude of metal die 40 by from by supply unit 30 therefrom the upstream of pipe die path R processed by supplying with the sheet molding little by little change towards its downstream, in the upstream position of pipe die path R processed, to make paired metal die 40 be the reception attitude and in the downstream position of pipe die path R processed, to make paired metal die 40 be molded attitude (see figure 2).Pipe die path R processed extends along the direction of the supply in the lower position of supply unit 30, and as shown in plan view, upstream position is arranged in the supply position (see figure 3) of supply unit 30.
The reception attitude of metal die 40 represents such attitude in pairs: wherein overturn along upward direction in each metal die surface 42, and each metal die surface 42 (can be configured to be in contact with one another) adjacent one another are in other marginal portion.Therefore, when sheet molding (resin material 8) was fed on each the metal die surface 42 that is in the paired metal die 40 that receives attitude, the sheet molding was out of shape towards metal die surface 42 owing to conducting oneself with dignity.Preferably, receive attitude and should be set as such state: wherein the almost straight part in the cross sectional view is arranged in (see figure 4) on the almost horizontal plane on each metal die surface 42.According to receiving attitude, the almost straight part in the cross sectional view on each metal die surface 42 is almost parallel with horizontal plane, and gravity direction is almost consistent with each other with the direction corresponding with the shorter direction of special shaped sylphon bellows 10.Therefore, resin material 8 can form with metal die surface 42 with less deflection and contact (see figure 4).
And in pairs the molded attitude of metal die 40 represents such attitude: this attitude is used for supplying to resin material 8 on the metal die surface 42 and is molded as shape as the special shaped sylphon bellows 10 of product.Herein, molded attitude represents such attitude: wherein in pairs to each other predetermined space is located to form in each metal die surface 42 in the metal die 40 in one of marginal portion, is engaged with each other in office, another side edge and thus (preferably form and be in contact with one another) adjacent one another are.In other words, paired metal die 40 is in the situation of molded attitude, the special shaped sylphon bellows 10 that obtains to be provided with the slit 16 of locating to open than one of end on the length direction in cross sectional view is possible.Be different from wherein the situation that forms slit by cutting, thus obtained special shaped sylphon bellows 10 is without revolution mark.Yet in pairs the molded attitude of metal die 40 is not limited to this, and can be such attitude: in the situation of making without the special shaped sylphon bellows of slit 16, two marginal portions that make each metal die surface 42 are (see figure 7) adjacent one another are all.
To the concrete structure of driving mechanism section 50 be described.Driving mechanism section 50 has directed section 52, paired guiding rail 56 and the 62(of feeding section and sees Fig. 2 and 4 to 7).
Directed section 52 is for along guiding rail 56 moving metal moulds 40 and be coupled to the parts of many each to metal die 40.More specifically, the directed section 52 support section 54(that has the assembled portion 53 that is engaged in the guiding rail 56 and be used for support metal mould 40 sees Fig. 4 to 7).Support section 54 is in the center almost with metal die surface 42(at its cardinal extremity) part on the opposite side is fixed to metal die 40.And assembled portion 53 is coupled to the head portion side of support section 54 and is formed the area of section that is larger than the area of section of support section 54.In other words, directed section 52 is formed on the whole and is almost T shape shape.
Guiding rail 56 is along the many parts to metal die 40 of moving track guiding for the state that has assembled respectively therein directed section 52 in pairs.Guiding rail 56 is located opening in one of part, and is formed and is the almost C shape shape in cross sectional view that has the wide inner space of ratio open section 57 at place, the inboard of peristome 57.
The directed section 52 that is coupled to each metal die 40 is assemblied in in the paired guiding rail 56 each, thereby supports each metal die 40.Metal die 40 is configured to arrange with endless loops about guiding rail 56 contiguous ground.Directed section 52 is assemblied in the guiding rail 56 in such attitude: almost the bearing of trend with guiding rail 56 is identical along its continuous direction so that the male portion in metal die 40 divides the surperficial 42a of formation to form surperficial 42b with concave portions.Metal die 40 can move by abutting each other in turn on the whole, and perhaps metal die 40 or directed section 52 can be moved with coupled situation by unshowned coupling components.
In pairs guiding rail 56 is arranged along moving track, and is formed to be and wherein can guides directed section 52 the attitude of paired metal die 40 is changed into the distorted shape of molded attitude on pipe die path R processed from the reception attitude.More specifically, make paired metal die 40 be reception attitude (see figure 4) at the upstream position (the supply position of supply unit 30) of pipe die path R processed, and ultraviolet, one of the marginal portion that makes metal die surface 42 are little by little near being set as other marginal portion adjacent one another are and being molded attitude (see figure 6) at the downstream position of pipe die path R processed.And in pairs guiding rail 56 is formed in the moving track outside the pipe die path R processed paired metal die 40 is separated from each other, and the attitude that changes each metal die 40 is to be the reception attitude in the upstream position of pipe die path R processed.Fig. 4 to 6 show respectively paired metal die 40 the position of Fig. 2 A to C attitude.
In other words, guiding rail 56 is shape like this in pairs, make peristome 57 the upstream position of pipe die path R processed be turned into towards above and tilt gradually, and the downstream position of pipe die path R processed toward each other (herein, towards slightly upside tilt) and towards the upstream position of pipe die path R processed again gradually upset be towards the top.
Feeding section 62 be for metal die 40 feedings on moving track along the direction of the supply of supply unit 30 namely at pipe die path R processed from the upstream towards the mechanism that the direction in downstream moves.For example, as feeding section 62, can adopt such structure: wherein, the mated gear 64 that utilizes motor 63 synchronously to rotate and drive is arranged in the precalculated position on each moving track and can be arranged on each metal die 40 by the ledge (not shown) that engages with each gear 64, and each gear 64 that will be rotated and drive engaged with feeding metal die 40(by the ledge with each metal die 40 see Fig. 2).In Fig. 2, shown in broken lines be used for making mated gear 64 timing belt simultaneously.And feed rolls may be utilized to substitute gear and is configured to contact with metal die 40.Yet feeding section 62 is not restricted to said structure, but can be preferably respectively along the paired metal die 40 of the predetermined direction feeding of moving track, and can adopt other various structures.
Want the attitude of the paired metal die 40 that driven-mechanism section 50 moves in such state, little by little to change: so that in pipe die path R processed resin material 8 respectively on metal die surface 42 or between them.Therefore, in pipe die path R processed, the paired metal die 40 that is arranged can be different attitudes in turn.Therefore, preferably reduce because attitude difference and skew between the metal die surface 42 of in turn paired metal die 40.Therefore, preferably driving mechanism section 50 should be with paired guiding rail 56(peristome 57) distortion be set as milder, thereby more moderately change over attitude to metal die 40.
And driving mechanism section 50 has such structure: on the preset distance of the upstream position that comprises pipe die path R processed, make paired metal die 40 move (seeing Fig. 2 and 3) to receive attitude.In other words, make paired guiding rail 56 be almost straight shape (distortionless) at the preset distance that comprises upstream position.This structure is used for keeping and is tending towards more holding at once yielding resin material 8 after supply and does not make its adhesion, and is used for making resin material 8 be attached to more reliably metal die surface 42.
And then driving mechanism section 50 is constituted as on the preset distance of the downstream position that comprises pipe die path R processed, makes paired metal die 40 move (see figure 2) with molded attitude.In other words, make paired guiding rail 56 be almost straight shape (distortionless) at the preset distance that comprises downstream position.This structure is used for the resin material 8 under the soft state is molded as curdled appearance, wherein under curdled appearance, thus resin material hard shape that keeps independently like this.
Adhere to molded 70 and have such structure, this structure is attached to the resin material 8 of being supplied with sheet by supply unit 30 to be the surperficial 42(of each metal die of the paired metal die 40 that receives attitude to see Fig. 8).
Adhere to molded 70 herein, and adopt the structure of using the vacuum moulded method.The vacuum moulded method is used for the resin material 8 drawn on the metal die surface 42 that is fed into metal die 40 from metal die face side 42, makes thus resin material 8 be attached to metal die surface 42 and carries out molded to become the shape on metal die surface 42.Adhere to molded 70 and have such structure: a plurality of SSs 72 that pass the outside of the inboard on metal die surface 42 and metal die 40 are formed at paired metal die 40, and utilize aspirator 74 to be positioned at the air of the inside on metal die surface 42 via SS 72 suctions.SS 72 is formed respectively and divides the surperficial 42a of formation and concave portions to form surperficial 42b opening in male portion.When flaky resin material 8 therein is fed in the state that is the paired metal die 40 that receives attitude by each SS 72 suction air, air between flaky resin material 8 and the metal die surface 42 is sucked, thereby makes resin material 8 be attached to metal die surface 42.Aspirate execution in paired metal die 40 between the moving period that is set in pipe die path R processed herein.Suction period represents such duration: in this duration, make at least that the resin material 8 on (perhaps between metal die surface 42) on the metal die surface 42 is attached to metal die surface 42 fully, thereby and because temperature reduces hardening also is maintained to the shape of adhering on metal die surface 42 in addition in non-aspiration phases.
And, leak from the part between the paired metal die 40 (other marginal portion on metal die surface 42) in order when adhering to molded 70 execution suction, to suppress air, be provided with airtight member 48(and see Fig. 4 to 7).More specifically, airtight member 48 is formed by rubber or resin material that can strain.Airtight member 48 is configured to each outstanding (, outstanding slightly) from other end face of paired metal die 40 herein, and is set in the reception attitude of paired metal die 40 and abuts and the state of strain.Therefore, can suppress air leaks from the part between the metal die 40 on metal die surface 42 sides of paired metal die 40 and its opposite side.
Yet, adhere to the structure that is not restricted to use vacuum moulded method for molded 70.For example, can adopt such structure: with compressed air from it section's injection towards the metal die surface 42 that is the paired metal die 40 that receives attitude.In other words, utilize this structure, compressed air is injected into and is fed on the flaky resin material 8 that is on the paired metal die 40 that receives attitude, and resin material 8 is out of shape by backup metal die surface 42 and therefore make it be attached to metal die surface 42.In addition, can adopt such structure: make with paired metal die 40 in the concave metal die surface of each corresponding concave metal mould approach each that be in the paired metal die 40 that receives attitude, make thus resin material 8 be attached to metal die surface 42.For example, preferably, utilize to be used for making the concave metal mould rotation with the concave metal die surface that forms around this axis or making the structure that this concave metal mould moves up and down and make resin material 8 be attached in turn metal die surface 42 around axis.
And, be not restricted to the structure that when being moved into metal die 40, changes attitude for the manufacture of the device 20 of special shaped sylphon bellows.In other words, also can adopt such structure: utilize supply unit 30 that sheet molding (resin material 8) is supplied to be and receive attitude and have on the paired metal die 40 of predetermined length, then under the state that does not move, the attitude of paired metal die is changed into molded attitude.
＜for the manufacture of the method for special shaped sylphon bellows 〉
Below, will method for the manufacture of special shaped sylphon bellows 10 be described by wherein using for the manufacture of the example of the device 20 of special shaped sylphon bellows.Suppose to utilize driving mechanism section 5 to move along moving track many to metal die 400.
At first, molten resin material 8 is released with sheet, and supplies with this melted material (step (a) sees that Fig. 4 upside place is with the resin material 8 shown in the double dot dash line).More specifically, molten resin material 8 is supplied to section 30 and releases with sheet by T mould 32, and therein temperature than supplying with molten resin material 8 under the low soft state of the temperature of molten condition.The sheet molding (resin material 8) of supplying with thus is placed in such state to be in the upstream position of pipe die path R processed on the paired metal die 40 that receives attitude: in this state, the sheet molding hangs on metal die surface 42 because of Action of Gravity Field, and partly contacts with 42 formation of metal die surface.Then, the sheet molding is supplied with continuously by supply unit 30, and be positioned among the pipe die path R processed from the upstream towards the downstream move many to metal die 40 on.
Then, the sheet molding of supplying with in step (a) is formed the shape that is such: namely, and special shaped sylphon bellows 10 locating fracture and opening (step (b)) than one of end on the length direction in cross sectional view.More specifically, use the utilization of vacuum moulded method to adhere to molded 70 by the air in the part of each SS 72 suction between resin material 8 and metal die surface 42, see Fig. 4 and 8 thereby make resin material 8 be attached to metal die surface 42().Under action of gravitation, flaky resin material 8 is out of shape near metal die surface 42.
Then, the molding closure that in step (b), forms and the shape (step (c)) that is wherein special shaped sylphon bellows 10 fractures and opens.In other words, when the attitude of paired metal die 40 when when move downstream the upstream of pipe die path R processed, changing into molded attitude gradually, resin material 8 distortion, make in the cross sectional view with special shaped sylphon bellows 10 than the corresponding part in one of end on length direction (see figure 5) close to each other gradually.Equally in this state, resin material 8 is maintained in the soft state that temperature reduces gradually.Herein, the temperature of resin material 8 reduces when contacting with metal die 40 or air.
In addition, when the attitude of paired metal die 40 was changed to molded attitude, resin material 8 was the shape (see figure 6) as the special shaped sylphon bellows 10 of product.In pairs metal die 40 is moved in the state in downstream of pipe die path R processed therein, and resin material 8 is in curdled appearance, and wherein resin material is like this hard and can keep independently shape.
When paired metal die 40 was moved further from the downstream position of pipe die path R processed, the metal die surface 42 of metal die 40 was separated from each other (see figure 2) with respect to the peripheral part of special shaped sylphon bellows 10 in pairs.Then, the special shaped sylphon bellows 10 of finishing by from pipe die path R processed towards the downstream feeding.
As mentioned above, made special shaped sylphon bellows 10.
Make therein in the situation without the special shaped sylphon bellows of slit 16, preferably have such structure: in pairs the attitude of metal die 40 is changed to wherein to maintain at resin material 8 and has high temperature and make in the situation that they are adhered together, in pairs the marginal portion molded attitude (see figure 7) adjacent one another are in one of metal die surface 42 of metal die 40.In other words, can adopt the structure of the mechanism that wherein is provided for heating of metal mould 40.
According to for the manufacture of the device 20 of special shaped sylphon bellows with for the manufacture of the method for special shaped sylphon bellows, adopted such structure: wherein molten resin material 8 is supplied to section's 30 releases and supplies with, and received in receiving attitude by the sheet molding (resin material 8) that supply unit 30 is supplied with, then the attitude of metal die 40 is changed to molded attitude in pairs.In other words, be tending towards after supplying with, directly under molten condition, reducing the rear at once resin material 8 of distortion in temperature and supplied with sheet, so that resin material 8 is difficult to be attached to together.And then the sheet molding that will supply with receives by being in the paired metal die 40 that receives in the attitude, and in receiving attitude, resin material 8 is difficult to be attached to together.After receiving the reception under the attitude and directly the temperature after supply reduces, the attitude of paired metal die 40 is changed into molded attitude and therefore is molded into the shape of special shaped sylphon bellows.Therefore, prevented that the resin material 8 just supplied with is crooked and roll under Action of Gravity Field, perhaps is attached to together; Therefore, can make the flat special shaped sylphon bellows 10 with high elongation rate.
And the molded attitude of metal die 40 is set to wherein each metal die surface 42 attitude that quilt is provided at predetermined intervals in one of marginal portion in pairs.Therefore, in the situation that do not provide individually slit to form step, can make the flat special shaped sylphon bellows 10 that has be used to the slit 16 that holds wire harness WH.
And in pairs the reception attitude of metal die 40 is set to wherein each metal die surface 42 upsets and towards the attitude of top.Therefore, can prevent from supplying to that the sheet molding (resin material 8) that is on the paired metal die 40 that receives attitude is out of shape and near metal die surface 42 and to deviate from 42 ground, metal die surface crooked or roll or be attached to together under Action of Gravity Field from supply unit 30.Therefore, can make more reliably the flat special shaped sylphon bellows 10 with high elongation rate.
And, the sheet molding is supplied to section 30 and supplies with continuously, and how mobile at paired moving track respectively to metal die 40, and therefore makes its upstream position at pipe die path R processed be the reception attitude, and and then, make its downstream position at pipe die path R processed be molded attitude.Therefore, can make by this way special shaped sylphon bellows: receive continuously from the resin material 8 of supply unit 30 by many sheets that metal die 40 is supplied with, each the attitude in the paired metal die 40 is changed into molded attitude thus in turn.In other words, can make continuously the special shaped sylphon bellows 10 with high elongation rate.
In addition, by directed section 52 being directed to the guiding rail 56 that is torsion structure, can when attitude being changed into reception attitude or molded attitude, be moved into metal die 40.Therefore, can utilize simple structure when changing attitude, to be moved into metal die 40.
＜with reference to the manufacturing with special shaped sylphon bellows of high elongation rate 〉
To provide by existing device for the manufacture of bellows and explanation of making the appropriateness of the flat special shaped sylphon bellows 10 with different percentage elongations for the manufacture of the device 20 of special shaped sylphon bellows according to the present invention.
Existing for the manufacture of device adopt with the structure of vacuum moulded method such as adhere to substitute for molded 70 in the patent documentation 1 disclosed for the manufacture of the blow moiding method in the device of bellows.In other words, utilize this structure, molten resin material is released with tubular by extruding machine, and is fed into thus in the paired metal die of the closure that forms the tubular molding space, and from metal die face side suction air so that the tubular molding is attached to the metal die surface.
Herein, will illustrate use the Nylon(registration mark) make the situation of the bellows that does not form slit on it as resin material.
Made in the situation of bellows by existing device for the manufacture of bellows therein, have 2.5 or more the special shaped sylphon bellows of low elongation can be molded in the mode identical with tubular bellows (percentage elongation is as 1); Yet it is impossible making the special shaped sylphon bellows 10 with three times or larger percentage elongation.Reason is presumed as follows: in the soft state after directly temperature begins to reduce under molten condition, be tending towards being out of shape easily by the molding of extruding the machine supply, and in addition, in the cross sectional view than the part on the length direction along shorter direction with little positioned at intervals; Therefore, direct molding after supplying with is being attached to together than the part on the length direction.In other words, in this case, molded of resin material is become the shape of bellows is impossible in the situation that be not adhered to the metal die surface.
On the other hand, in the device 20 for the manufacture of special shaped sylphon bellows, the molding (resin material 8) of being supplied with by supply unit 30 is set in the soft state of at once realization after temperature begins to reduce under molten condition; Yet, supplied with sheet and by being after the paired metal die 40 that receives attitude receives, the attitude of metal die 40 is changed to molded attitude and carries out thus molded in pairs at molding.In other words, directly in the soft state that supply realizes afterwards, resin material 8 is not with the relative part in little interval, then, the therein further reduction of temperature and resin material 8 compare under the state (resin material 8 has the state of the softness that can be molded) that directly resin material of acquisition is harder after supplying with owing to temperature reduces, and resin material 8 is molded into the shape of special shaped sylphon bellows 10.Be referenced into the reception attitude to metal die 40, similarly, the sheet molding that be supplied to is out of shape under Action of Gravity Field with near metal die surface 42.Therefore, can prevent that resin material 8 is owing to the distortion in the direct more soft state after supplying with is attached to together.Therefore, adhere to and to make for molded 70 resin material 8 be attached to reliably metal die surface 42; Therefore, resin material 8 can be molded as the shape of special shaped sylphon bellows 10.
As mentioned above, according to the device 20 for the manufacture of special shaped sylphon bellows, supposition can solve the problem of existing device for the manufacture of bellows, and can make the flat special shaped sylphon bellows 10 with three times or larger percentage elongation that is difficult to utilize existing device manufacturing for the manufacture of bellows.
Although below described special shaped sylphon bellows 10 in detail, for the manufacture of the device 20 of special shaped sylphon bellows with for the manufacture of the method for special shaped sylphon bellows, all aspects of this specification only are schematically, and the present invention is not restricted to this.Should be appreciated that, in the situation that do not depart from scope of the present invention, can design the multiple modification that is not illustrated.
Description of reference numerals
10 special shaped sylphon bellows
12 convex parts
14 concave portions
16 slits
20 devices for the manufacture of special shaped sylphon bellows
30 supply units
40 metal dies
42 metal dies surface
50 driving mechanism sections
70 adhere to molded section
The WH wire harness

Claims (7)

1. sectional corrugated pipe manufacturing apparatus for the manufacture of flat special shaped sylphon bellows, described sectional corrugated pipe manufacturing apparatus comprises:
Supply unit, described supply unit are used for molten resin is released with sheet, and supply with described molten resin;
The paired metal die that is used for molded special shaped sylphon bellows, described paired metal die comprise the metal die surface, described metal die surface have respectively in the cross sectional view with described special shaped sylphon bellows than a part that sidepiece is corresponding on the length direction;
Driving mechanism section, described driving mechanism section can change into the attitude of described paired metal die and receive attitude and molded attitude, and after the sheet molding of being supplied with by described supply unit is the described paired metal die reception that receives attitude, described driving mechanism section changes into described molded attitude with the attitude of described paired metal die, in described reception attitude, described metal die surface is opened, and can receive the sheet molding of being supplied with by described supply unit; In described molded attitude, described metal die surface is closed; With
Adhere to molded section, describedly adhere to molded and be used for the metal die surface make the sheet molding of being supplied with by described supply unit be attached to the described paired metal die that is described reception attitude.
2. the device for the manufacture of special shaped sylphon bellows according to claim 1, wherein, the molded attitude of described paired metal die is such attitude: each described metal die surface forms predetermined space in a marginal portion, and adjacent one another are in another marginal portion.
3. the device for the manufacture of special shaped sylphon bellows according to claim 1, wherein, the reception attitude of described paired metal die is such attitude: each described metal die surface is turned into towards the top, and adjacent one another are in described another marginal portion.
4. the device for the manufacture of special shaped sylphon bellows according to claim 1, wherein, described supply unit can be supplied with described sheet molding continuously, and
Described driving mechanism section respectively on paired endless loops moving track arow move many to described metal die, and little by little change the attitude of described paired metal die towards the downstream from the upstream, thereby make in the upstream position in the predetermined pipe die path processed of described paired metal die in described moving track and be the reception attitude, and make the downstream position in the described pipe die processed path of described paired metal die in described moving track be molded attitude, wherein, described sheet molding is supplied with by described predetermined pipe die path processed from described supply unit.
5. the device for the manufacture of special shaped sylphon bellows according to claim 1, wherein, described driving mechanism section comprises:
Directed section, described directed section are installed to described many to each metal die in the metal die;
Paired guiding rail, described guiding rail is along described moving track setting, and forms and have such shape: can be with the guiding of described directed section in described pipe die path processed the attitude of described paired metal die is changed into described molded attitude from described reception attitude; With
Feeding section, described feeding section are used for so that described many mode feedings that metal die is moved towards described downstream from described upstream in described pipe die path processed are described many to metal die.
6. sectional corrugated pipe manufacturing method for the manufacture of flat special shaped sylphon bellows, described sectional corrugated pipe manufacturing method may further comprise the steps:
(a) molten resin is released with sheet, and supplied with described molten resin;
(b) the sheet molding of supplying with in the described step (a) is molded as such shape: described special shaped sylphon bellows rupturing and opening than the end place on the length direction in cross sectional view; And
(c) make the shape molding body closure that in described step (b), is molded as and has described special shaped sylphon bellows fracture and open.
7. flat special shaped sylphon bellows, in described flat special shaped sylphon bellows, in cross sectional view than being sized on the shorter direction three times of size or larger on the length direction.
CN201180036611.6A 2010-07-26 2011-02-25 Device for manufacturing profile corrugated tube, method for manufacturing profile corrugated tube and profile corrugated tube Expired - Fee Related CN103038050B (en)

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JP5565168B2 (en) 2014-08-06

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